SOIL SIFTERS – Barnstable Public Schools Director of Facilities David Kanyock, left, and Dave Bennett of Bennett Environmental check out the recently dedicated vegetable garden at Hyannis West Elementary School June 23. Last week, a resident called public attention to the possibility of traces of a now-banned pesticide, Chlordane, on the opposite side of the school. Garden organizer Sue LaVallee said her group was aware of the situation “well before groundbreaking” earlier this year and that it had been addressed in 2009 with a $231,000 clean-up. Eager to “allay any fears,” LaVallee said, the gardeners asked to have the soil tested. On Monday, Bennett said the results of his tests would be available in a week.